JP2007138173A - Use of polyolefin wax in hot melt composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot melt composition satisfying a wide variety of requirements for hot melt composition relating to adhesiveness, cohesiveness, melt viscosity, temperature stability, etc., enabling easy formulation, economically producible at a low cost and free from the above defects. <P>SOLUTION: The invention provides a combination of an isotactic homopolymer or copolymer wax having low molecular weight and low viscosity with an atactic poly-α-olefin (APAOs). The hot melt composition exhibits remarkable effect as a hot melt adhesive. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is described in German Patent Application No. 102005055019.3 filed on Nov. 18, 2005, which is the basis of the priority of the present application, the contents of which are hereby fully described.

  The present invention relates to hot melt compositions based on isotactic low molecular weight, low viscosity homopolymer or copolymer waxes and atactic poly-α-olefins (= APAOs).

  A hot melt composition or hot melt is a thermoplastic that is solid at room temperature and is applied in layers to a suitable solid surface in a liquid molten state where it performs various functions after solidification. The composition preferably includes resins, waxes, thermoplastic resins and elastomers and optionally may further contain additives such as fillers, pigments and additives such as stabilizers.

  As an example, the hot melt composition can be used as a solvent-free adhesive for bonding. Because of its various advantages, this type of hot melt adhesive is a common solvent-based adhesive in the manufacture of products, including hygiene products and care products, and in the paper, packaging, furniture, textile, footwear and construction industries. It is increasingly used as an economical and environmentally friendly alternative to agents.

  The hot melt composition can be used as a thermoplastic binder for “zebra stripes” in pedestrian crossings, signal indications such as centerlines or boundaries, or other signs to control traffic flow. It is also used in construction work. In addition to the wax, the binder used for this purpose may additionally contain thermoplastic synthetic resins, resins and plasticizers. For road marking applications, these binders are generally mixed with fillers such as sand or lime, pigments such as titanium dioxide and light reflecting additives such as glass beads.

  The components of a typical hot melt adhesive formulation are polar and nonpolar polymers, resins and waxes. The bond strength obtained with the adhesion remaining after the pressure sensitive hot melt adhesive is solidified depends on the one hand on the interaction between the adhesive and the substrate to be bonded, ie between the pressure sensitive hot melt adhesive and the substrate. Although it depends on the adhesive force, the adhesive force is also based on the cohesive force (ie, internal strength) of the pressure-sensitive hot melt adhesive itself.

  Polar and non-polar polymers of pressure sensitive hot melt adhesives serve as framework materials. These are responsible for adhesive agglomeration and at the same time contribute to bonding to the substrate. The addition of the resin can improve the adhesion and help the compatibility of the various components of the adhesive. The wax is generally used in a proportion of less than 10% by weight based on the hot melt adhesive composition for adjustment. This adjusts the important physical properties of the adhesive, such as hardness, melt viscosity and softening point, and has an important influence on its performance characteristics by the action of opening time, adhesion, cohesion and the like. However, it has been found that use of waxes greater than 10% by weight generally results in degradation of properties, particularly a reduction in the bond strength of hot melt adhesives.

  EP-A-0,890,584 describes the preparation of homopolymer and propylene-copolymer waxes with metallocene catalysts and their use in hot melt compositions, among others. This hot melt composition contains substantially three components: a polymer, an adhesive component (adhesive) and a wax.

  International Patent Application Publication No. 2004/104128 includes 0.1 to 30% by weight of ethylene and 0.1 to 50% by weight of a branched or straight chain of 4 to 20 carbon atoms as a polyolefin wax. A hot melt composition containing a propylene-copolymer wax containing a 1-alkene is disclosed.

  US Pat. No. 5,397,843 discloses a hot melt composition comprising a high molecular weight ethylene-α-olefin copolymer and a low molecular weight atactic poly-α-olefin (APAOs).

U.S. Patent Application Publication Nos. 2004/0115456 and 2004/0081795 contain 4 to 50% by weight of isotactic propylene copolymer and 20 to 65% by weight of adhesive component (adhesive), for example Hydrocarbon resins, natural and modified resins, resin esters and synthetic polyterpenes, and optionally atactic poly-α-olefins (APAOs), plasticizers, waxes, stabilizers, fillers and optionally a second polymer, such as A hot melt composition containing poly (meth) acrylate or the like is disclosed. Examples of hot melt compositions described in two U.S. Patent Application Publications contain 1.5 to 20 wt% of isotactic propylene copolymer with ethylene or higher α-olefins, the copolymer has a number average molecular weight _{M n} of about 170,000～240,000G / mole weight average molecular weight _{M w} and about 60,000～80,000G / mol. However, the high molecular weight olefin polymer is a high viscosity or solid like a synthetic resin and has very little adhesion. The hot melt compositions described in U.S. Patent Application Publication Nos. 2004/0115456 and 2004/0081795 contain 20-65% by weight of an adhesive in addition to an isotactic propylene copolymer. . The use of such a large amount of pressure-sensitive adhesive is likely to cause corrosion, odor, and adversely affects the recycling process of products provided using the hot melt composition.

  Suitable processing viscosity, sufficiently good initial tack, cohesiveness, adhesion to various material surfaces, low and high temperature stability are important quality criteria for hot melt composition applications, but sufficient There is also a degree of flexibility, and in certain end uses, composites and joints are subject to tensile and stretching loads over an extended period of time.

  The object of the present invention is to meet the very various performance requirements for hot melt compositions with respect to tackiness, cohesion, melt viscosity, temperature stability, etc., which can be well prepared and handled and economical It is to provide a hot melt composition that can be produced inexpensively under conditions and does not have the above-mentioned drawbacks.

   Quite surprisingly, the inventors have found that this problem is solved by a combination of isotactic low molecular weight, low viscosity homopolymer or copolymer waxes with atactic poly-α-olefins (APAOs). It was.

  Mixtures of atactic poly-α-olefins (APAOs) and isotactic low molecular weight, low viscosity homopolymer or copolymer waxes are 500 to 10,000 mPa.s. s, preferably 1000 to 5000 mPa.s. It has a viscosity in the range of s, can be easily applied to the surface and exhibits very good cohesion.

The present invention
a) 1 to 99% by weight of at least one isotactic homopolymer consisting of monomeric ethylene and / or propylene and / or linear or branched higher α-olefins having 4 to 20 carbon atoms And / or copolymer wax; however, the copolymer wax or wax is 0.1 to 30% by weight of structural units derived from one monomer and 70 to 99.9% by weight based on the total weight of the copolymer wax or waxes % Of other monomers or structural units derived from monomers, and the homopolymer and copolymer waxes have a weight average molecular weight _Mw of less than or equal to 40,000 g / mol, and by metallocene catalyst Obtained at a dropping point of 80 to 165 ° C. or ring and ball method Has a reduction point, 20～40,000MPa measured at a temperature of 170 ° C.. and a glass transition temperature T _g not higher than −20 ° C .; and b) 1 to 99% by weight of one or more amorphous, atactic poly-α-olefins (APAOs)
The present invention relates to a hot melt composition containing

The present invention preferably
a) one or more isotactic homopolymer and / or copolymer waxes consisting of monomeric ethylene and / or propylene, wherein the copolymer wax is 0.1 to 30 weights based on the total weight of the copolymer wax % Of structural units derived from one type of monomer and 70-99.9% by weight of structural units derived from other monomers,
The present invention relates to a hot melt composition.

Further advantageous hot melt compositions according to the invention are:
a) containing one or more isotactic propylene homopolymer waxes and / or propylene copolymer waxes, wherein the propylene copolymer is 0.1 to 30% by weight of structural units derived from ethylene and 70 structural units derived from propylene. Contains ˜99.9% by weight.

  In another advantageous embodiment of the invention, the polyolefin wax present in the hot melt composition is a copolymer of ethylene and at least one branched or linear 1-alkene having 3 to 20 carbon atoms. In this case, the content of the structural unit from the branched or linear 1-alkene having 3 to 20 carbon atoms in the copolymer wax is in the range of 0.1 to 30% by weight.

  In another advantageous embodiment of the invention, the polyolefin wax present in the hot melt composition is selected from propylene and ethylene and branched or linear 1-alkenes having 4 to 20 carbon atoms. A copolymer wax with one or more other monomers, wherein the copolymer wax has an ethylene content in the range of 0.1 to 30% by weight and is branched or 4 to 20 carbon atoms in the copolymer wax The amount of structural units from linear 1-alkene is 0.1 to 50% by weight.

Another advantageous hot melt composition according to the invention has a number average molecular weight M _n of from 500 to 20,000 g / mol, preferably from 800 to 10,000 g / mol, particularly preferably from 1000 to 5000 g / mol and from 1000 to 40, 000 g / mol, preferably 1600～30,000G / mol, particularly preferably contains a homopolymer and / or copolymer waxes having 2000～25,000G / mole weight average molecular weight _{M w.}

  The atactic poly-α-olefins (APAOs) used according to the invention in hot melt compositions are exclusively amorphous and have a crystallinity of less than 30% as measured by DSC (Differential Calorimetry). ing. The APAOs used may be homopolymers of propylene or copolymers of propylene and one or more α-olefins such as ethylene, 1-butene, 1-propene, 1-hexene, 1-heptene and 1-octene. The weight average molecular weight Mw of the APAOs used is in the range of 4000-150,000 g / mol, preferably 10,000-100,000 g / mol. The softening point is 80 to 170 ° C, and the glass transition temperature Tg is -5 to -40 ° C.

Of the APAOs, propylene homopolymers, propylene-ethylene copolymers, propylene-1-butene copolymers, and propylene-ethylene-1-butene terpolymers are preferred. APAO polymers are available under the registered trademark names of ^(R) Eastoflex (manufacturer: Eastman Chemical Company), ^(R) Rextac (manufacturer: Huntsman Corporation) or ^(R) Vestoplast (manufacturer: Degussa Corporation).

In one advantageous embodiment, the hot melt composition of the present invention comprises:
a) 1 to 98% by weight, preferably 5 to 80% by weight, particularly preferably 10 to 70% by weight, in particular 20 to 60% by weight of one or more isotactic homopolymers and / or copolymer waxes; And b) 1 to 98% by weight, preferably 10 to 80% by weight, particularly preferably 20 to 70% by weight, in particular 30 to 60% by weight, of one or more amorphous atactic poly-α-olefins ( APAOs).

In yet another advantageous embodiment, the hot melt composition of the present invention comprises:
a) 1 to 98% by weight, preferably 5 to 80% by weight, particularly preferably 10 to 70% by weight, in particular 20 to 60% by weight, of monomeric ethylene and / or propylene and / or carbon atoms of 4 to 20 At least one isotactic homopolymer and / or copolymer wax consisting of a linear or branched higher α-olefin; wherein the copolymer wax or wax is 0.1 based on the total weight of the copolymer wax -30% by weight of structural units derived from one monomer and 70-99.9% by weight of structural units derived from linear or branched monomers or monomers.

  In another advantageous embodiment, the hot melt composition of the present invention is 0.1 to 35% by weight, preferably 5 to 30% by weight, more preferably 10 to 20% by weight, particularly preferably 12 to 18% by weight. % Resin.

  Resins that can be used are aliphatic and cycloaliphatic hydrocarbons having a softening point of 10-160 ° C. as measured by ASTM method E28-58T. These can be produced by polymerizing aliphatic and / or alicyclic monomers. Likewise suitable are hydrogenated aliphatic and alicyclic hydrocarbons.

  The hot melt composition of the present invention may further contain polyolefin polymers, waxes, plasticizers, polar or nonpolar polymers, pigments, fillers, stabilizers and / or antioxidants.

  The polyolefin waxes used in accordance with the present invention are prepared using a metallocene compound of formula (I).

この式は下記式（Ｉａ）〜（Ｉｃ）の化合物も包含する：

This formula also includes compounds of the following formulas (Ia) to (Ic):

式（Ｉ）、（Ｉａ）、（Ｉｂ）および（Ｉｃ）中、 Ｍ^１は周期律表 IVb、Vb または VIbの金属、例えばチタン、ジルコニウム、ハフニウム、バナジウム、ニオブ、タンタル、クロム、モリブデンおよびタングステン、好ましくはチタン、ジルコニウムまたはハフニウムである。

In formulas (I), (Ia), (Ib) and (Ic), M ¹ is a metal of periodic table IVb, Vb or VIb, such as titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten Preferred is titanium, zirconium or hafnium.

R ¹ and R ² may be the same or different from each other and are a hydrogen atom, C ₁ -C ₁₀ , preferably a C ₁ -C ₃ alkyl group, especially methyl, C ₁ -C ₁₀ , preferably C ₁ -C ₃ Alkoxy group, C ₆ -C ₁₀ , preferably C ₆ -C ₈ aryl group, C ₆ -C ₁₀ , preferably C ₆ -C ₈ aryloxy group, C ₂ -C ₁₀ , preferably C ₂ -C ₄ alkenyl Group, C ₇ -C ₄₀ , preferably C ₇ -C ₁₀ arylalkyl group, C ₇ -C ₄₀ , preferably C ₇ -C ₁₂ alkylaryl group, C ₈ -C ₄₀ , preferably C ₈ -C ₁₂ aryl An alkenyl group or a halogen atom, preferably a chlorine atom.

R ³ and R ⁴ may be the same or different from each other, and may be a mononuclear or polynuclear hydrocarbon residue that may form a sandwich structure with the central atom M ¹ . R ³ and R ⁴ are cyclopentadienyl, indenyl, tetrahydroindenyl, benzoindenyl or fluorenyl, in which case they are similar structures and therefore may have additional substituents or bridge each other. It may be built. One of the residues R ³ and R ⁴ may also be a substituted nitrogen atom, in which case R ²⁴ has the meaning of R ¹⁷ and is preferably methyl, tert-butyl or cyclohexyl.

R ⁵ , R ⁶ , R ⁷ , R ⁸ , R ⁹ and R ¹⁰ may be the same or different from each other, and are a hydrogen atom, a halogen atom, preferably a fluorine atom, a chlorine atom or a bromine atom, C ₁ -C ₁₀ , Preferably C ₁ -C ₄ alkyl group, C ₆ -C ₁₀ , preferably C ₆ -C ₈ aryl group, C ₁ -C ₁₀ , preferably C ₁ -C ₃ alkoxy group, residue -NR ¹⁶ _2- , -SR ^16- , -OSiR ¹⁶ _3- , -SiR ¹⁶ ₃ -or -PR ¹⁶ _2- , wherein R ¹⁶ is C ₁ -C ₁₀ , preferably C ₁ -C ₃ alkyl or C _6- C ₁₀ , preferably C ₆ -C ₈ aryl group or the like, and in the case of a residue containing Si or P, a halogen atom, preferably a chlorine atom, or R ⁵ , R ⁶ , R ⁷ , R ⁸ , R ⁹ and R ¹⁰ may form a ring with the carbon atoms attached to them. Particularly advantageous ligands are substituted compounds of similar structure cyclopentadienyl, indenyl, tetrahydroindenyl, benzoindenyl or fluorenyl.

R ¹³ is the formula

=BR¹⁷、 =AlR¹⁷、-Ge-、 -Sn-、-O-、-S-、=SO、=SO₂、=NR¹⁷、 =CO、=PR¹⁷ または=P(O)R¹⁷であり、その際に R¹⁷、 R¹⁸および R¹⁹ は互いに同一でも異なっていてもよく、水素原子、ハロゲン原子、好ましくは弗素原子、塩素原子または臭素原子、C₁-C₃₀、好ましくは C₁-C₄ アルキル、特に好ましくは メチル基、 C₁-C₁₀ フルオロアルキル、好ましくは CF₃基、C₆-C₁₀フルオロアリール、好ましくは ペンタフルオロフェニル基、 C₆-C₁₀、好ましくは C₆-C₈ アリール基、C₁-C₁₀、好ましくは C₁-C₄ アルコキシ、特に好ましくはメトキシ基、C₂-C₁₀、好ましくは C₂-C₄アルケニル基、 C₇-C₄₀、好ましくは C₇-C₁₀ アルアルキル基、C₈-C₄₀、好ましくは C₈-C₁₂ アリールアルケニル基または C₇-C₄₀、好ましくは C₇-C₁₂ アルキルアリール基であり、または R¹⁷ とR¹⁸、 またはR¹⁷とR¹⁹は互いにそれらが結合する原子と一緒に環を形成してもよい。

= BR ¹⁷ , = AlR ¹⁷ , -Ge-, -Sn-, -O-, -S-, = SO, = SO ₂ , = NR ¹⁷ , = CO, = PR ¹⁷ or = P (O) R ¹⁷ R ¹⁷ , R ¹⁸ and R ¹⁹ may be the same or different from each other, and are a hydrogen atom, a halogen atom, preferably a fluorine atom, a chlorine atom or a bromine atom, C ₁ -C ₃₀ , preferably C ₁ -C ₄ alkyl, particularly preferably methyl group, C ₁ -C ₁₀ fluoroalkyl, preferably CF ₃ group, C ₆ -C ₁₀ fluoroaryl, preferably pentafluorophenyl group, C ₆ -C _10, preferably C ₆ -C ₈ aryl group, C ₁ -C _10, preferably C ₁ -C ₄ alkoxy, particularly preferably methoxy, C ₂ -C _10, preferably C ₂ -C ₄ alkenyl group, C ₇ -C _40, preferably Is a C ₇ -C ₁₀ aralkyl group, C ₈ -C ₄₀ , preferably a C ₈ -C ₁₂ arylalkenyl group or C ₇ -C ₄₀ , preferably a C ₇ -C ₁₂ alkylaryl group, or with R ¹⁷ R ¹⁸ or R ¹⁷ and R ¹⁹ may form a ring together with the atoms to which they are bonded.

M ² is silicon, germanium or tin, preferably silicon and germanium.

R ¹³ is preferably = CR ¹⁷ R ¹⁸ , = SiR ¹⁷ R ¹⁸ , = GeR ¹⁷ R ¹⁸ , -O-, -S-, = SO, = PR ¹⁷ or = P (O) R ¹⁷ .

R ¹¹ and R ¹² may be the same or different from each other and have the meaning defined for R ¹⁷ . m and n may be the same or different from each other, and mean 0, 1 or 2, preferably 0 or 1, in which m + n is 0, 1 or 2, preferably 0 or 1.

R ¹⁴ and R ¹⁵ have the meanings specified for R ¹⁷ and R ¹⁸ .

Examples of suitable metallocenes include the following:
Bis (1,2,3-trimethylcyclopentadienyl) zirconium dichloride,
Bis (1,2,4-trimethylcyclopentadienyl) zirconium dichloride,
Bis (1,2-dimethylcyclopentadienyl) zirconium dichloride,
Bis (1,3-dimethylcyclopentadienyl) zirconium dichloride,
Bis (1-methylindenyl) zirconium dichloride,
Bis (1-n-butyl-3-methylcyclopentadienyl) zirconium dichloride,
Bis (2-methyl-4,6-diisopropylindenyl) zirconium dichloride,
Bis (2-methylindenyl) zirconium dichloride,
Bis (4-methylindenyl) zirconium dichloride,
Bis (5-methylindenyl) zirconium dichloride,
Bis (alkylcyclopentadienyl) zirconium dichloride,
Bis (alkylindenyl) zirconium dichloride,
Bis (cyclopentadienyl) zirconium dichloride,
Bis (indenyl) zirconium dichloride,
Bis (methylcyclopentadienyl) zirconium dichloride,
Bis (n-butylcyclopentadienyl) zirconium dichloride,
Bis (octadecylcyclopentadienyl) zirconium dichloride,
Bis (pentamethylcyclopentadienyl) zirconium dichloride,
Bis (trimethylsilylcyclopentadienyl) zirconium dichloride,
Biscyclopentadienyl-zirconium-dibenzyl,
Biscyclopentadienyl-zirconium-dimethyl,
Bistetrahydroindenyl-zirconium-dichloride,
Dimethylsilyl-9-fluorenylcyclopentadienyl-zirconium-dichloride,
Dimethylsilylbis-1- (2,3,5-trimethylcyclopentadienyl) zirconium dichloride,
Dimethylsilylbis-1- (2,4-dimethylcyclopentadienyl) zirconium dichloride,
Dimethylsilylbis-1- (2-methyl-4,5-benzoindenyl) zirconium dichloride,
Dimethylsilylbis-1- (2-methyl-4-ethylindenyl) zirconium dichloride,
Dimethylsilylbis-1- (2-methyl-4-isopropylindenyl) zirconium dichloride,
Dimethylsilylbis-1- (2-methyl-4-phenylindenyl) zirconium dichloride,
Dimethylsilylbis-1- (2-methylindenyl) zirconium dichloride,
Dimethylsilylbis-1- (2-methyltetrahydroindenyl) zirconium dichloride,
Dimethylsilylbis-1-indenylzirconium dichloride,
Dimethylsilylbis-1-indenylzirconium-dimethyl,
Dimethylsilylbis-1-tetrahydroindenylzirconium dichloride,
Diphenylmethylene-9-fluorenylcyclopentadienyl-zirconium-dichloride,
Diphenylsilylbis-1-indenylzirconium dichloride,
Ethylenebis-1- (2-methyl-4,5-benzoindenyl) zirconium dichloride,
Ethylenebis-1- (2-methyl-4-phenylindenyl) zirconium dichloride,
Ethylenebis-1- (2-methyltetrahydroindenyl) zirconium dichloride,
Ethylene bis-1- (4,7-dimethylindenyl) zirconium dichloride,
Ethylene bis-1-indenylzirconium dichloride,
Ethylenebis-1-tetrahydroindenylzirconium dichloride,
Indenylcyclopentadienylzirconium-dichloride isopropylidene (1-indenyl) (cyclopentadienyl) zirconium-dichloride,
Isopropylidene (9-fluorenyl) (cyclopentadienyl) zirconium dichloride,
Phenylmethylsilylbis-1- (2-methylindenyl) zirconium dichloride,
And alkyl or aryl derivatives of these metallocene dichlorides.

This single center catalyst system is activated using a suitable promoter. Suitable promoters for the metallocenes of the formula (I) are organoaluminum compounds, in particular aluminoxanes, or aluminium-free systems such as R ²⁰ _x NH _4-x BR ²¹ ₄ , R ²⁰ _x PH _4-x BR ²¹ ₄ , R ²⁰ ₃ CBR ²¹ ₄ or BR ²¹ ₃ In these formulas, x is a number from 1 to 4, and the residues R ²⁰ may be the same or different from each other, preferably the same and are C ₁ -C ₁₀ alkyl or C ₆ -C ₁₈ aryl. Or the two residues R ²⁰ may form a ring together with the atoms to which they are attached and the residues R ²¹ may be the same or different, preferably the same, and are alkyl, haloalkyl or fluorine C ₆ -C ₁₈ aryl optionally substituted by In particular, R ²⁰ is preferably ethylene, propylene, butylene or phenyl and R ²¹ is preferably phenyl, pentafluorophenyl, 3,5-bistrifluoromethylphenyl, mesityl, xylyl or tolyl.

  In addition, a third component is often necessary to maintain protection against polar catalyst poisons. Also suitable for this purpose are organoaluminum compounds such as triethylamine, tributylamine and the like and mixtures thereof.

  Depending on the method, a single center supported catalyst may also be used. Preference is given to catalyst systems in which the balance of support and cocatalyst does not exceed a concentration of 100 ppm in the product.

  The invention further relates to the use of the hot melt composition as a hot melt adhesive.

  Other possible components include resins, waxes, and nonpolar or polar polymers such as ethylene-vinyl acetate copolymers, polyacrylates, polyesters, polyethers, polycarbonates, polyacetals, polyurethanes, polyolefins and rubber-based polymers. For example, nitrile or styrene / butadiene rubber.

  Polyisobutylene, styrene-butadiene-styrene block polymers or styrene-isoprene-styrene block polymers, and especially strong bonds, polyamides or polyesters. Examples of resin components that may be present are rosin and its derivatives or hydrocarbon resins, whereas possible waxes are hydrocarbon waxes, such as Fischer-Tropsch paraffin, and polyolefin waxes using a metallocene catalyst. The wax can also be subjected to nonpolar or polar modification, for example by oxidation or grafting with a polar monomer such as maleic anhydride. The hot melt adhesive composition may further contain fillers or auxiliaries such as plasticizers, pigments and stabilizers such as antioxidants or light stabilizers.

  The following examples illustrate the invention in more detail to those skilled in the art, but do not limit the invention thereto.

  In the following examples, the melt viscosity according to DIN 53019 is measured using a rotary viscometer, the drip point is measured according to DIN 51801/2 and the ring and ball softening point is measured according to DIN EN 1427. The weight average molecular weight Mw, the number average molecular weight Mn, and the resulting quotient Mw / Mn were determined by gel permeation chromatography at 135 ° C. in 1,2-dichlorobenzene.

Example:
EP 1 It manufactured according to the method as described in application publication 0,384,264 (refer Examples 1-16). Various softening points and viscosities were adjusted by varying ethylene feed rate and various polymerization temperatures.

性能結果:

Performance results:

表３に挙げたホットメルト接着剤組成物は表１に示したコポリマーワックス３および６およびVestoplast 703 (製造元：Degussa)の登録商標で入手できるアタクチックのα−オレフィン（ＡＰＡＯｓ）から製造した。その際の混合割合はＡＰＡＯおよびホモポリマーまたはコポリマーワックスについて表３に示す。個々の成分を一緒に溶融しそして１時間の間に１８０℃で攪拌した。

The hot melt adhesive compositions listed in Table 3 were made from the copolymer waxes 3 and 6 shown in Table 1 and atactic α-olefins (APAOs) available under the registered trademark Vestoplast 703 (manufacturer: Degussa). The mixing ratio is shown in Table 3 for APAO and homopolymer or copolymer wax. The individual components were melted together and stirred at 180 ° C. for 1 hour.

  The melt viscosity of the hot melt composition at 170 ° C. is measured using a rotary viscometer in accordance with DIN 53519, and the cohesiveness is measured by casting and testing its mechanical stability in a tensile test according to DIN 53455. did.

Claims (11)

a) 1 to 99% by weight of at least one isotactic homopolymer consisting of monomeric ethylene and / or propylene and / or linear or branched higher α-olefins having 4 to 20 carbon atoms And / or copolymer wax; provided that the copolymer wax or wax is 0.1 to 30% by weight of structural units derived from one monomer and 70 to 99.9 based on the total weight of the copolymer wax or wax. Containing structural units derived from% by weight of other monomers or monomers, and the homopolymer and copolymer waxes have a weight average molecular weight _Mw of less than or equal to 40,000 g / mol and a metallocene catalyst A dripping point or ring ball of 80-165 ° C. It has a softening point of at, 20～40,000MPa measured at a temperature of 170 ° C.. and a glass transition temperature T _g not higher than −20 ° C .; and b) 1 to 99% by weight of one or more amorphous, atactic poly-α-olefins (APAOs)
A hot melt composition. a) one or more isotactic propylene homopolymer waxes and / or propylene copolymer waxes, wherein the propylene copolymer waxes are structural units derived from ethylene on the basis of the total weight of the copolymer waxes. The hot melt composition according to claim 1, comprising -30 wt% and 70-99.9 wt% of structural units derived from propylene. A polyolefin wax comprising at least one linear or branched 1-alkene having 3 to 20 carbon atoms and ethylene and at least one 1 to 3 carbon atoms in the copolymer wax. The amount of structural units from the branched or linear 1-alkene is in the range of 0.1 to 30% by weight,
The hot melt composition according to claim 1 or 2. The polyolefin wax contains a copolymer wax of propylene and one or more other monomers selected from ethylene and a branched or straight chain 1-alkene having 4 to 20 carbon atoms, and the ethylene of the copolymer wax The content of structural units from branched or linear 1-alkenes having a content in the range of 0.1 to 30% by weight and having 4 to 20 carbon atoms in the copolymer wax is 0.1 to 50% by weight. The hot melt composition according to any one of claims 1 to 3, which is in the range of%. Homopolymer and / or copolymer wax of 500 to 20,000 g / mol, preferably 800 to 10,000 g / mol, particularly preferably 1000 to 5000 g / mol, number average molecular weight M _n and 1000 to 40,000 g / mol, preferably The hot melt composition according to claim 1, which has a weight average molecular weight M _w of 1600 to 30,000 g / mol, particularly preferably 2000 to 25,000 g / mol. 6. The atactic poly-alpha-olefins (APAOs) used are exclusively amorphous and have a crystallinity of less than 30% as measured by DSC (Differential Calorimetry). The hot melt composition according to any one of the above. APAOs used are homopolymers of propylene or copolymers of propylene and one or more α-olefins such as ethylene, 1-butene, 1-propene, 1-hexene, 1-heptene and 1-octene. 6. The hot melt composition according to 6. The APAOs used have a weight average molecular weight Mw in the range of 4000-150,000 g / mol, preferably 10,000-100,000 g / mol and a softening point of 80-170 ° C., glass transition temperature T The hot melt composition according to any one of claims 1 to 7, wherein _g is -5 to -40 ° C. a) one or more isotactic homopolymer and / or copolymer waxes in an amount in the range 1 to 98% by weight; and b) one or more amorphous in an amount in the range 1 to 98% by weight. Quality atactic poly-α-olefins (APAOs)
The hot melt composition according to claim 1, further comprising: The hot melt composition according to any one of claims 1 to 9, further comprising a resin in an amount of 0.1 to 35% by weight. The method using the hot-melt composition as described in any one of Claims 1-10 as a hot-melt-adhesive.